CN2227017Y - Small-bore internal plastic-coated steel pipe capable of electric welding connection - Google Patents
Small-bore internal plastic-coated steel pipe capable of electric welding connection Download PDFInfo
- Publication number
- CN2227017Y CN2227017Y CN 95213016 CN95213016U CN2227017Y CN 2227017 Y CN2227017 Y CN 2227017Y CN 95213016 CN95213016 CN 95213016 CN 95213016 U CN95213016 U CN 95213016U CN 2227017 Y CN2227017 Y CN 2227017Y
- Authority
- CN
- China
- Prior art keywords
- steel pipe
- steel core
- steel
- small
- electric welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 57
- 239000010959 steel Substances 0.000 title claims abstract description 57
- 238000003466 welding Methods 0.000 title claims abstract description 17
- 239000004033 plastic Substances 0.000 title abstract description 3
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000006223 plastic coating Substances 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011490 mineral wool Substances 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract 2
- 239000000565 sealant Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
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Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
The utility model discloses a plastic-coated steel pipe in small-bore that can electric welding hookup, it designs the both ends of steel pipe for the flared end. When in connection, a section of steel core is inserted into the flaring end, and the inside of the steel core is coated with a plastic coating layer which is the same as that of the steel pipe; the outer surface of the steel core, which is in contact with the steel pipe, is coated with an anticorrosive sealant, and the central part of the outer surface of the steel core is provided with a heat-resistant layer and a heat-insulating layer; and an anti-corrosion sealing ring and an anti-corrosion heat-insulation sealing ring are sleeved at two ends of the outer surface of the steel core. The utility model discloses a can the wide application be used for carrying the trade of corrosive medium such as chemical industry, oil field.
Description
The utility model belongs to the aseptic technic field, specifically a kind of small-bore internal plastic coating steel pipe that can electric welding connects.
In recent years, plastic-coated steel has obtained very fast development in China, it is widely used in every profession and trades such as chemical industry, oil, electric power, shipbuilding, printing and dyeing, has improved the situation that China's every profession and trade steel pipe seriously is corroded, and makes the steel pipe corrosion-proof erosion level of China jump onto a new step.Yet the repairing between two steel pipes after the welding has become an insurmountable difficult problem, the following small-bore internal plastic coating steel pipe of diameter DN150 particularly, the technical staff of various countries since the fifties just the research of this respect, and many measures have been adopted, as: adopt anticorrosion core screw thread to connect, hole in the welding position, put in a tubule then, repair.But these measures still can not well solve the anticorrosion problem of welding rear port.
The purpose of this utility model is the anticorrosion problem that solves small-bore internal plastic coating steel pipe electric welding connection place, after realizing welding, need not to repair.
For reaching above-mentioned purpose, the utility model has been done following design; The two ends of every internal plastic coating steel pipe are designed to flared end, design has a steel core in the flared end of two pipes, the inside of steel core scribbles the coating layer same with steel pipe, the one side that steel core contacts with steel pipe scribbles preserving and sealing glue, at central part refractory layer and heat insulation layer are arranged, destroy undercoating in the time of can preventing electric welding, all have at the two ends of steel core to prevent preserving and sealing circle, the anticorrosive heat insulating sealing ring revealed.
The utility model is through evidence, and after welding connected, anticorrosion undercoating was not damaged, construction easily, and cost is lower.
Below in conjunction with accompanying drawing the utility model is further explained:
The connection diagram of the small-bore internal plastic coating steel pipe that Fig. 1 can electric welding connects for the utility model.
Two have the steel pipe of undercoating [1] to realize connecting in flared end [2] as can be known from Fig. 1, be inserted with one section steel core [8] in the flared end [2] of two steel pipes of connection place, the outer surface that steel core [8] contacts with steel pipe is coated with useful epoxy, the preserving and sealing glue [5] that the phenolic thermosets is formed, the middle body of steel core outer surface, it is the corresponding position of steel pipe seam, by refractory layer of forming with heat proof material [6] and the heat insulation layer [7] formed with alumina silicate or rock wool class material, the inner surface of steel core scribbles the coating layer [9] same with steel pipe undercoating [1], outer surface two ends at steel core, be with respectively with raw rubber and be the preserving and sealing circle [3] of material and be the anticorrosive heat insulating sealing ring [4] of material, to stop of the leakage of place, steel core [8] two ends toward seam crossing with the heat resistant rubber.
During construction, need only insert the flared end [2] of two steel pipes, get final product electric welding packaging preserving and sealing circle [3] and anticorrosive heat insulating sealing ring [4] with the supporting steel core [8] of steel pipe.
Claims (4)
1, a kind of small-bore internal plastic coating steel pipe that can electric welding connects comprises the flared end of steel pipe, it is characterized by in the flared end of two steel pipe connection places and is inserted with one section steel core, the coating layer that the inside of steel core scribbles and the steel pipe the inside is same; The outer surface that steel core contacts with steel pipe scribbles preserving and sealing glue, at the central part of steel core outer surface refractory layer and heat insulation layer is arranged; All be with preserving and sealing circle and anticorrosive heat insulating sealing ring at the two ends of steel core outer surface.
2, a kind of small-bore internal plastic coating steel pipe that can electric welding connects as claimed in claim 1, it is characterized by the preserving and sealing glue that outer surface was coated with that steel core contacts with steel pipe is epoxy, phenolic thermosets.
3, a kind of small-bore internal plastic coating steel pipe that can electric welding connects as claimed in claim 1, the heat insulation layer that it is characterized by the central part of steel core outer surface is alumina silicate or rock wool class material.
4, a kind of small-bore internal plastic coating steel pipe that can electric welding connects as claimed in claim 1, the preserving and sealing circle and the anticorrosive heat insulating sealing ring that it is characterized by the steel core two ends are respectively raw rubber and heat resistant rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95213016 CN2227017Y (en) | 1995-06-20 | 1995-06-20 | Small-bore internal plastic-coated steel pipe capable of electric welding connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95213016 CN2227017Y (en) | 1995-06-20 | 1995-06-20 | Small-bore internal plastic-coated steel pipe capable of electric welding connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2227017Y true CN2227017Y (en) | 1996-05-15 |
Family
ID=33863027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95213016 Expired - Fee Related CN2227017Y (en) | 1995-06-20 | 1995-06-20 | Small-bore internal plastic-coated steel pipe capable of electric welding connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2227017Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533345A (en) * | 2014-04-03 | 2015-04-22 | 刘兴仁 | Abrasion-resistance and anti-corrosion wrapped heat insulation oil pipe |
| CN113864559A (en) * | 2021-09-28 | 2021-12-31 | 临海伟星新型建材有限公司 | Electric melting pipe fitting with blocking function and manufacturing method thereof |
| CN114670377A (en) * | 2022-04-09 | 2022-06-28 | 河北圣耐普特矿山设备有限公司 | Rubber casting pipeline vulcanization process |
-
1995
- 1995-06-20 CN CN 95213016 patent/CN2227017Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104533345A (en) * | 2014-04-03 | 2015-04-22 | 刘兴仁 | Abrasion-resistance and anti-corrosion wrapped heat insulation oil pipe |
| CN104533345B (en) * | 2014-04-03 | 2017-04-19 | 刘兴仁 | Abrasion-resistance and anti-corrosion wrapped heat insulation oil pipe |
| CN113864559A (en) * | 2021-09-28 | 2021-12-31 | 临海伟星新型建材有限公司 | Electric melting pipe fitting with blocking function and manufacturing method thereof |
| CN114670377A (en) * | 2022-04-09 | 2022-06-28 | 河北圣耐普特矿山设备有限公司 | Rubber casting pipeline vulcanization process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |